Some of you know fathers who are unpredictable, unreliable, or fickle.

你们知道有这样的父亲：他们不可预计，不可信，变化无常。

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Some of you know fathers who are unpredictable, unreliable, or fickle. They're always changing, depending on the mood they're in. Inconsistent fathers produce insecure children.

你们知道有这样的父亲：他们不可预计，不可信，变化无常。他们根据自己的心绪不断变化。变化无端的父亲导致不安的孩子。

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The tales illustrate the frustrations that many chemists feel for their fickle field, particularly when experiments fail to work or instead produce inconsistent results.

这些故事说明了许多化学家在其变化无常的领域所感受到的挫折，特别是在实验失败或产生不一致的结果的时候。

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Not that the scheming, cynical professional politicians come out much better in this telling, or the fickle and easily manipulated populace for that matter.

CNN: STORY HIGHLIGHTS

Among the alleged crimes of twentysomethings these days is hiding out in school (or in various far-flung places, like Iceland), thus deferring adult life, or being fickle in the job market once they get there.

NEWYORKER: Semi-Charmed Life

The bankers, it was said, would take a longer view and be more understanding of downturns than the fickle stock- or debt-markets sought out by firms elsewhere.

ECONOMIST: The fabled Mittelstand is feeling the pinch more than most